baltur SPARKGAS 20 - 20W, Инструкция

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8) When the has started up it is necessary to check as previously shown, the gas delivery and the combustion with
the appropriate instruments. When the results are known, necessary, proceed with varying the gas delivery
and relative combustion air in order to adapt delivery to that required for the specific case (boiler potentiality).
It’s also necessary to check if the CO
2
and CO values are adequate (CO
2
max. = about 10% for methane gas
and CO = 0.1%).
9) Control the efficiency of the safety devices: the “shut down” (by detaching the ionisation electrode cable), the
air pressure switch, the gas pressure switch, the gas pressure switch and the thermostats).
AIR REGULATION ON THE COMBUSTION HEAD (see BT 8769/2 and 0002932161)
The combustion head is equipped with a regulating device which closes and opens the air passage between the
disk and the head. By closing the passage it’s possible to achieve high pressure upstream the disk for low inputs
as well. High velocity and turbulence ensure a better penetration in the fuel, an optimum mixture and good flame
stability. It might be necessary to have high air pressure upstream the disk in order to avoid flame pulsation and
it’s considered practically indispensable when the burner is operating with a pressurised furnace and/or thermal
load. It’s evident from the above, that the device which closes the air on the combustion head should be put in
such a position as to always obtain a decidedly high air pressure value behind the disk. It’s advisable to regulate
in such a way as to achieve a closing of the air on the head; this will necessitate a considerable opening of the air
shutter which regulates the flow to the burner’s fan suction. Obviously, these adjustments should be carried out
when the burner is operating at maximum delivery desired. In practice, start regulating by putting the device which
closes the air on the combustion head in an intermediate position, start up the burner and make trial adjustments
as previously described.
When maximum delivery desired
has been reached, proceed with correcting the position of the device which
closes the air on the combustion head; move it backwards or forwards in such a way as to obtain an air flow
suitable to the delivery, with the air regulation shutter in suction considerably open. When reducing the air
passage on the combustion head, avoid closing it completely.
N.B. Check that ignition occurs regularly, because if the passage between the disk and the head is closed, it could
occur that the air velocity is so high as to render ignition difficult. If this happens, gradually open the regulator until
it reaches the correct position and ignition occurs regularly. This position should be definitive.
MAINTENANCE
The burner does not require special maintenance, but it is good practice to check periodically that the gas filter is
clean and that the ignition electrode is efficient. It is also necessary to verify that the ignition electrode’s spark is
produced between the same electrode and the disk. The combustion head may need cleaning. During re-assembly,
special attention must be paid to centring exactly the electrodes (ignition and flame detection) in order to avoid
them going to earth or short-circuiting which would result in the “shut down” of the burner.
USE OF THE BURNER
The burner operates fully automatically, therefore it is non necessary to carry out any kind at adjustment during its
operating. The “block” position is a safety position reached by the burner automatically when some of the
components of the burners or the plant do not work properly.
It is necessary to check then whether the cause to the problem is a dangerous one before unblocking the burner.
The causes to the block may be temporary, for example when air in inside the pipes.
When it is unblocked, the burner starts operating properly. If the burner stops three or four times at a stretch, it is
necessary either to loock for the problem and solve it or ask for the intervention of the after sales service.
The burner can remain in the “block” position without any limit in time.
In emergency cases it is advisable to close the fuel valve, and to disconnect the burner electrically.